The Spanish Naval Museum in Madrid is simple in appearance, but has a unique interior. The museum’s 24 exhibition halls are the epitome of Spanish history, and the Naval Museum displays countless compass, guns, ships and other military equipment. The museum is rich in collections and features many maps, which are best known for an irregular rectangular map. It is spliced from two kraft paper, hand-painted by a navigator named Juan • Dela • Kosa, which can be regarded as the treasure of the museum's town hall.